Lithium battery pole piece coating anti-overflow edge device

Abstract

The utility model discloses a kind of lithium battery pole piece coating anti-overflow edge device, it is related to coating device technical field, including equipment total frame, the left end of equipment total frame is fixedly connected with coating support, and the inner end of coating support is installed with smearing equipment component, a kind of lithium battery pole piece coating anti-overflow edge device of the present design, first, it is realized that electrode piece band is continuously uniform speed transmission by winding material roller shaft and material receiving roller shaft constitute stable transmission mechanism, avoid the coating deviation caused by transmission fluctuation, and then smearing equipment component of coating support fixed drive coating liquid head accurate alignment pole piece, ensure that slurry is evenly coated, and auxiliary drying block can be flexibly adjusted interval with pole piece width in coating process, edge solidification irradiation lamp targets heating edge slurry, fast solidification avoids overflow, thick edge, improves finished product pass rate, simultaneously hot air pump machine and hollow rectangular deflector cooperate and realize hot air even shunt, guarantee pole piece overall drying consistent, it is convenient to operate, maintenance cost is low, satisfy the demand of large-scale production.

Description

Technical Field

[0001] This utility model relates to the field of coating device technology, and in particular to a lithium battery electrode coating anti-overflow device. Background Technology

[0002] In the mass production of lithium-ion battery electrodes, the coating process is considered the "lifeline" that determines the core performance of the cell. The coating quality directly affects the three key indicators of the cell: energy density, cycle life, and safety performance. The uniformity and consistency of the electrode coating are fundamental to ensuring the efficient insertion and extraction of lithium ions during charging and discharging.

[0003] Patent document CN220941566U discloses a lithium battery electrode coating machine, including a housing and a sliding mechanism. A fixing block is installed on the top of the housing, and a fixing mechanism is installed on the outside of the fixing block. A connecting block is installed on the top of the housing, and a connecting plate is installed on one side of the connecting block. A roller is installed on one side of the connecting plate, and a sliding mechanism is installed on one side of the connecting block. In this lithium battery electrode coating machine, the interior of the outer column has a groove, and the sliding block is connected to the interior of the outer column through a slide rail in the groove, which reduces the noise emitted by the machine, strengthens the overall connection, and maintains the stability of operation.

[0004] In the actual coating process, the surface tension characteristics of the slurry can easily cause typical thick edge defects. Due to the surface tension difference inside the slurry, the slurry located at the edge of the electrode will flow towards the edge under the action of tension after coating, forming a thickness accumulation in the edge area. The edge thickness is often several micrometers to tens of micrometers thicker than the middle area. When winding, it accumulates to form a bulging edge of several millimeters, which can lead to electrode breakage in severe cases. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a lithium battery electrode coating anti-overflow device, which solves the problems mentioned in the background.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a lithium battery electrode coating anti-overflow device, comprising a main frame of the equipment, a coating bracket fixedly connected to the left end of the main frame of the equipment, a coating equipment assembly installed at the inner end of the coating bracket, a coating liquid outlet fixedly connected to the end of the coating equipment assembly near the main frame of the equipment, a winding roller shaft symmetrically installed between the left and right inner walls of the main frame of the equipment, a receiving roller shaft installed on the side of the main frame of the equipment away from the winding roller shaft, connecting brackets symmetrically fixedly connected to the front and rear ends of the main frame of the equipment, a transverse bracket fixedly connected between the two connecting brackets, and multiple auxiliary drying blocks movably connected to the left and right sides of the transverse bracket, with an edge curing irradiation lamp fixedly connected to the lower end of the auxiliary drying block.

[0007] As a further technical solution of this utility model, an electrode strip is wound between the receiving roller shaft and the winding roller shaft, and a discharge port is opened on the lower inner wall of the overall frame of the equipment.

[0008] As a further technical solution of this utility model, the electrode strip is extracted from the discharge port, and the electrode strip coated on the liquid outlet head and the outer side of the winding roller shaft are connected to each other.

[0009] As a further technical solution of this utility model, the irradiation end of the edge curing lamp is located above the electrode strip, and multiple auxiliary drying blocks are arranged horizontally at equal intervals.

[0010] As a further technical solution of this utility model, a hot air pump is fixedly connected to the upper end of the equipment frame, and an air outlet duct is fixedly connected to the upper inner wall of the equipment frame.

[0011] As a further technical solution of this utility model, an internal support is fixedly connected between the front and rear inner walls of the overall frame of the equipment, and hollow rectangular guide plates are symmetrically fixedly connected to the upper and lower ends of the internal support.

[0012] As a further technical solution of this utility model, the air outlet duct extends into the overall frame of the equipment and is located above the hollow rectangular guide plate, and the horizontal support is located between the material winding roller shaft and the hollow rectangular guide plate.

[0013] This invention provides a lithium battery electrode coating anti-overflow device, which has the following advantages compared with the prior art: This design presents a lithium battery electrode coating anti-overflow device. First, a stable conveying mechanism consisting of a winding roller shaft and a receiving roller shaft ensures continuous and uniform conveying of the electrode strip, avoiding coating deviations caused by conveying fluctuations. Then, a coating equipment component with a fixed coating bracket drives the coating dispensing head to precisely align with the electrode, ensuring uniform coating of the slurry. During the coating process, the spacing of the auxiliary drying blocks can be flexibly adjusted according to the width of the electrode. An edge curing irradiation lamp targets and heats the edge slurry, quickly curing it to prevent overflow and thick edges, thus improving the finished product qualification rate. At the same time, a hot air pump and a hollow rectangular guide plate work together to achieve uniform hot air distribution, ensuring consistent drying of the entire electrode. The device is easy to operate, has low maintenance costs, and meets the needs of large-scale production. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall frame structure of the equipment of this utility model; Figure 2 This is a bottom view of the overall frame structure of the device according to this utility model; Figure 3 This is a schematic diagram of the horizontal support structure of this utility model; Figure 4 This is a schematic diagram of the hollow rectangular guide plate structure of this utility model.

[0015] In the picture: 1. Overall equipment frame; 2. Coating bracket; 3. Coating equipment components; 4. Material winding roller shaft; 5. Connecting bracket; 6. Horizontal bracket; 7. Auxiliary drying block; 8. Edge curing irradiation lamp; 10. Hot air pump; 11. Air outlet duct; 12. Internal bracket; 13. Hollowed-out rectangular guide plate; 14. Electrode strip; 15. Coating liquid outlet head; 16. Discharge port; 17. Material receiving roller shaft. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0017] Please see Figures 1-4 This utility model provides a technical solution for a lithium battery electrode coating anti-overflow device: it includes a main frame 1, a coating bracket 2 fixedly connected to the left end of the main frame 1, a coating equipment component 3 installed on the inner end of the coating bracket 2, a coating liquid outlet head 15 fixedly connected to the end of the coating equipment component 3 near the main frame 1, a winding roller shaft 4 symmetrically installed between the left and right inner walls of the main frame 1, a receiving roller shaft 17 installed on the side of the main frame 1 away from the winding roller shaft 4, connecting brackets 5 symmetrically fixedly connected to the front and rear ends of the main frame 1, a transverse bracket 6 fixedly connected between the two connecting brackets 5, and multiple auxiliary drying blocks 7 movably connected to the left and right sides of the transverse bracket 6, with an edge curing irradiation lamp 8 fixedly connected to the lower end of the auxiliary drying block 7.

[0018] Please see Figures 2-3 Electrode strips 14 are wound between the receiving roller shaft 17 and the winding roller shaft 4. The lower inner wall of the equipment frame 1 has a discharge port 16. The electrode strips 14 are pulled out from the discharge port 16. The coating liquid head 15 and the electrode strips 14 outside the winding roller shaft 4 are connected to each other. The irradiation end of the edge curing irradiation lamp 8 is located above the electrode strips 14. Multiple auxiliary drying blocks 7 are arranged horizontally at equal intervals.

[0019] Please see Figures 2-4A hot air pump 10 is fixedly connected to the upper end of the equipment frame 1. An air outlet duct 11 is fixedly connected to the upper inner wall of the equipment frame 1. An internal support 12 is fixedly connected between the front and rear inner walls of the equipment frame 1. Hollow rectangular guide plates 13 are symmetrically fixedly connected to the upper and lower ends of the internal support 12. The air outlet duct 11 extends into the equipment frame 1 and is located above the hollow rectangular guide plate 13. The transverse support 6 is located between the material winding roller shaft 4 and the hollow rectangular guide plate 13.

[0020] The working principle of this utility model is as follows: After the device is started, the winding roller shaft 4 and the receiving roller shaft 17 inside the main frame 1 form a cooperative conveying mechanism, which smoothly drives the electrode strip 14 to be drawn out from the discharge port 16 on the lower inner wall of the main frame 1, realizing continuous and uniform conveying of the electrode strip, providing a stable foundation for subsequent coating operations. At the same time, the coating equipment assembly 3 fixed on the coating bracket 2 drives the coating liquid head 15 to accurately align with the electrode strip 14 outside the winding roller shaft 4, ensuring that the slurry is uniformly coated on the surface of the electrode strip. After the coating process is completed, multiple horizontally equidistant auxiliary drying blocks 7 connected to both sides of the transverse bracket 6 can flexibly adjust the spacing according to the actual width of the electrode strip. The edge curing irradiation lamp 8 is installed at the lower end of the blocks. It can precisely focus on the coating edge of the electrode strip 14, and quickly dry the edge slurry through targeted heating, effectively avoiding defects such as overflow and thick edges, and significantly improving the coating quality of the electrode. Subsequently, the hot air generated by the hot air pump 10 at the top of the equipment frame 1 is delivered to the internal cavity through the air outlet duct 11 on the inner wall of the equipment. The hollow rectangular guide plate 13 fixed by the internal support 12 evenly distributes the hot air to the entire surface of the electrode strip 14, realizing the overall efficient drying of the electrode. It is worth noting that the layout design of the transverse support 6 between the winding roller shaft 4 and the hollow rectangular guide plate 13 allows the electrode to first complete the edge directional drying and then undergo overall drying treatment, further enhancing the anti-overflow effect and greatly improving the overall drying efficiency.

[0021] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model are implemented according to conventional methods in the art, unless otherwise specified or limited.

Claims

1. A lithium battery electrode coating anti-overflow device, characterized in that, The device includes a main frame (1), a coating bracket (2) is fixedly connected to the left end of the main frame (1), a coating equipment assembly (3) is installed on the inner end of the coating bracket (2), a coating liquid outlet (15) is fixedly connected to the end of the coating equipment assembly (3) near the main frame (1), a winding roller shaft (4) is symmetrically installed between the left and right inner walls of the main frame (1), a receiving roller shaft (17) is installed on the side of the main frame (1) away from the winding roller shaft (4), a connecting bracket (5) is symmetrically fixedly connected to the front and rear ends of the main frame (1), a transverse bracket (6) is fixedly connected between the two connecting brackets (5), a plurality of auxiliary drying blocks (7) are movably connected to the left and right sides of the transverse bracket (6), and an edge curing irradiation lamp (8) is fixedly connected to the lower end of the auxiliary drying block (7).

2. The lithium battery electrode coating anti-overflow device according to claim 1, characterized in that, Electrode strips (14) are wound between the receiving roller shaft (17) and the winding roller shaft (4), and the lower inner wall of the overall frame (1) of the equipment is provided with a discharge port (16).

3. The lithium battery electrode coating anti-overflow device according to claim 2, characterized in that, The electrode strip (14) is pulled out from the outlet (16), and the coated liquid head (15) and the electrode strip (14) outside the winding roller shaft (4) are connected to each other.

4. The lithium battery electrode coating anti-overflow device according to claim 1, characterized in that, The irradiation end of the edge curing lamp (8) is located above the electrode strip (14), and the multiple auxiliary drying blocks (7) are arranged horizontally at equal intervals.

5. A lithium battery electrode coating anti-overflow device according to claim 1, characterized in that, A hot air pump (10) is fixedly connected to the upper end of the equipment frame (1), and an air outlet duct (11) is fixedly connected to the upper inner wall of the equipment frame (1).

6. A lithium battery electrode coating anti-overflow device according to claim 5, characterized in that, An internal support (12) is fixedly connected between the front and rear inner walls of the overall frame (1) of the equipment, and hollow rectangular guide plates (13) are symmetrically fixedly connected to the upper and lower ends of the internal support (12).

7. A lithium battery electrode coating anti-overflow device according to claim 6, characterized in that, The air outlet duct (11) extends into the overall frame (1) of the equipment and is located above the hollow rectangular guide plate (13). The transverse support (6) is located between the winding roller shaft (4) and the hollow rectangular guide plate (13).

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